fix(search): expose pretty JSON option

[ayushcodes13]

Summary

• restore the -p, --pretty option registration for firecrawl search
• keep the existing search output behavior where pretty implies JSON output
• add CLI argv coverage so firecrawl search --help exposes --pretty

Closes #181

Test Plan

• pnpm run build
• pnpm vitest run src/__tests__/cli-argv.test.ts src/__tests__/commands/search.test.ts
• pnpm run format:check

The new CLI argv test failed before the option registration was restored because search help did not include --pretty; it passes after the change.

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Summary by cubic

Fixes #181 by restoring the -p, --pretty flag for firecrawl search to enable pretty-printed JSON and show it in --help. Preserves behavior where --pretty implies JSON and adds a CLI argv test to prevent regressions.

^{Written for commit 4d18d6f. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 2 files

_{Re-trigger cubic}